chore: upgrade composer deps

composer update --root-reqs
Loading composer repositories with package information
Updating dependencies
Lock file operations: 0 installs, 2 updates, 0 removals
  - Upgrading phpunit/phpunit (9.6.9 => 9.6.11)
  - Upgrading squizlabs/php_codesniffer (3.7.2 => 3.8.1)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 0 installs, 2 updates, 0 removals
  - Upgrading phpunit/phpunit (9.6.9 => 9.6.11): Extracting archive
  - Upgrading squizlabs/php_codesniffer (3.7.2 => 3.8.1): Extracting archive
Generating autoload files
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No security vulnerability advisories found.